Westminster schools are some of the worst affected by "poisonous" levels of pollution, new research reveals.
A study commissioned by environmental law charity ClientEarth shows that up to 700 schools in London are next to or near roads with harmful levels of illegal air pollution, more than 50 of which are located in Westminster.
Based on the latest UK government data, statistics reveal that despite Mayor Sadiq Khan's pledge to make a zero-emissions zone in central London by 2025, illegal levels of air pollution across the capital have not been dealt with.
ClientEarth air quality lawyer Alan Andrews said: "Children in London are playing in playgrounds near illegally polluted roads.
"Naturally, parents want something to be done. So do we.
"Mayor Sadiq Khan’s plans to bring a proposed Ultra Low Emission Zone in earlier than previously envisaged is absolutely essential if we are to protect people’s health.
"But he could go further, including a London-wide ULEZ for all vehicles to protect the health of all Londoners."
On Monday (September 11), ClientEarth launched its Poisoned Playgrounds campaign and 10 billboards will go up around Westminster to promote it.
Parents can search London's "poisoned playgrounds" by postcode using an interactive map on the charity's website.
One of the school's worst affected in W1 is St Mary's Bryanston Square CofE School, just 80 metres from Marylebone Road.
It has a Nitrogen dioxide(NO2) level of 95.5μg/m3 when the maximum legal limit for NO2 is 40μg/m3.
Supporters of the Poisoned Playgrounds campaign are being urged to put pressure on the government, by contacting their MPs.
See whether your child’s school is near an illegally polluted road by entering the school's postcode here .
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